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(No Model.) 2 Sheets-Sheet 1. H. M. DARLING.

CIRCULAR SAWING MAGHINB.

No. 389,061. Patented Sept. 4, 1888.

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2 Sheets-Sheet 2.

(No Model.)

H. M. DARLING.

CIRCULAR SAWING MACHINE No. 389,061. Patented Sept. 4, 1888.

WITNESSES 0 W i@z N. PEYERs. Phnlo-Ldhcgnphc UNITED STATES Aren't rrrcn.

HENRY M. DARLING, OF SENECA FALLS, NEXV YORK, ASSIGNOR TO ADELBERT S. DAVIS, OF SAME PLACE.

CIRCULAR SAWING MACHENE.

SPECIFICATION forming part of Letters Patent No. 389,061, dated September 4, 1888.

Application filed February i=1, ISRS .To aZZ whom, it may concern.-

Be it known that I, HENRY M. DARLING, of Seneca Falls, in the county of Seneca, in the State of New York, have invented new and useful Improvements in Circular Sawing Machines, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to an improvement in circular sawing machines; and it consists in certain peculiarities of the construction and arrangement of the same, substantially as will be hereinafter more fully described and claimed.

In order to enable others skilled in the art to which my invention pertains to make and use the same, I will now proceed to describe its construction and operation, referring to the accompanying drawings, in which- Figure 1 is a front elevation of the machine. Fig. 2 is an end elevation with the balancewheel removed to better show the working mechanism. Fig. 3 is a top plan view with the table partly broken away; and Fig. 4 is a vertical longitudinal section through the sawtable, showing it arranged for use in grooving.

(t represents the main frame of my machine, of any size, form, or material found most desirable, and provided on top with a frame, a, and hinged at the back side is the table-top a", as shown. As will be seen in Fig. 3, this top is made in two parts, at the joint of which the saw is placed, and one of the parts, for convenience in removing and replacing the saw, is made readily adjustable to and from the other by means of eccentric clamps a pivoted u11- der one edge of the frame a and engaging the beveled edge of the hinged portion a of the top frame. In the front end of frame a is an elevating-screw, b, for elevating and lowering the table for use in grooving, as will more fully appear hereinafter.

The saw-shaft b is jonrnaled transversely of the machine beneath the work-table, and is provided on its inner end with the circular saw b and on its outer end with a balancewhecl, b as illustrated. A pinion, c, on this shaftmeshes with a gear, 0, on the shaft 0, which extends across the machine, and is provided on its end with a crank, c, or equivalentrneans for applying power thereto. Power Serial No. 265,150. (Xomodcl) may be applied to the outer end of either the saw-shaft O or shaft 0 Cast upon the inner side of the pinion c is a worm, d. and pivoted upon the saw-shaft adjacent to this is the adjustable feed-carrier (2, consisting of a frame pivoted to swing upon the shaft and formed at each end with a concentric slot, (2 through which pass the securing bolts and screws (1 for securing this frame, if desired, atany point convenient for the work under operation. In the upper part of the swinging frame are formed a pair of slots 6. which are vertical to the main shaft, or, in other words, are parallel to a radius drawn from the shaft, and in these slots are adj ustably secured by the bolts 0 the feeding-frame 0*, which extends across over the table to a pointat or nearly in line with the saw. This will be clearly understood by reference to the drawings, in which it is fully illustrated. In this frame is journaled a shaft, f, on the inner end of which, in line with the sawblade, is removably secured a toothed fecdingdisk, f, which may at any time be removed by removing a thuumb-nut which secures it, in order to replace it with another ofdifferent size. ()n the outer end of this shaft isa bevel'gcar, g, which meshes with a similar gear, 5/, on a shaft, h, held in ofisets of the swing-frame d'and feed-frame e, and has on its lower end a wornrgear, h, which receives motion from the worm on the saw-shaft.

In operation, the material to be sawed is laid upon the table and the frames d and e are ad justcd, so that the feed-disk rests just at the proper height to properly feed stuff of the desired thickness. In ordinary work it is not necessary to secure the bolts (1 thus leaving the frame d free to adjust itself to accommodate different thicknesses of work. The feeddisk receives a slow motion from the sawshaft by means of the worm and the intermediate gears and shaft-ing, and the teeth of the disk engage and feed the stuff through with great accuracy and speed.

It will be particularly noted that the feed is derived from the sawshaft, and that no matter what thickness of material is used in sawing the feed-disk always maintains the same position relative to the edge of the saw, be cause in adjusting the feed for different thicknesses the whole feed mechanism swings upon thesaw-shaft,which is the sawcenter. Should the ordinary adjustment not be sufficient for very thin stuff, the feed frame is loosened and lowered in its parallel slots till the required point is reached. In this movement the bevelgear 9 slides readily on the shaft h, and no disarrangement of the parts occurs.

In Fig. 4 I have shown the machine as used for grooving. In this case the rip-saw is replaced by a grooving-saw of the requisite size and the table lifted at one end by the elevating-screw provided for the purpose till only so much of the saw-blade projects above the table as corresponds to the depth of the groove required. The feed devices are adjusted as before, and in this case I bring into play a small roller, m, secured on the end of a slotted arm, m, adj ustabl y secured .to the feed-frame. This roller is adjusted to bear upon the Work in rear of the saw and prevent any jumping of the work while under operation. The machine is intended more particularly for hand or foot power, but may of course be run by any motor desired.

A gage-bar, 12, extended across the table and adjustable to and from the saw,is used to guide the work and gage its cut.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a frame pivoted on the saw-shaft journaled on the main frame, with concentric slots in its outer edges and set-screws passing through the slots and into the top or table of the frame, of a second frame secured to the first in parallel slots vertical to the saw-shaft, a shaft carrying a miter-gear journaled in said frame, an adjustable guideroller, a feeding-disk, a vertically-adjustable top or table hinged to the main frame, a slitting saw mounted on the saw-shaft, and means for tilting the table, all substantially as described, and for the purpose set forth.

2. The combination, with the saw-shaft I), provided with a worm,cl, of the frame d,swinging on said shaft, the frame eisecnred thereto, and the feed-shaft f, feed-disk f, gears g g, shaft h, and worm-gear h, all constructed and arranged for operation substantially as and for the purpose set forth.

In testimony whereof I have hereunto signed my name, in the presence of two attesting witnesses. at Seneca Falls, in the county of Seneca, in the State of New York, this 16th day of February, 1888.

HENRY M. DARLING.

\Vitnesses:

ADELBER'I S. DAVIS, WIENAND HOUSEMAN. 

